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  • Winter and garden ponds. Floating plants like Water Lettuce (Pistia stratiotes) and Water Hyacinth (Eichornia crassipes) must be taken indoors and kept in light frost-free shade. Water Hyacinth can be potted up into a light, merely moist compost. Water Soldier (Stratiotes aloides) will sink to the bottom before the first frosts whereas Frogbit (Hydrocharis morsus-ranae ) and Water Chestnut (Trapa natans) form nuts or buds that sink to the bottom to rise again the following year to form plantlets. Unfortunately the Frogbit will fall prey to predatory snails and the Water Chestnut is unlikely to form nuts in cold climates, so they need rescuing to a pan of muddy water in good time before the autumn party is over, so they can do their thing in the warm protective ambience of a greenhouse or light shed or attic. all about garden pond plants

  • Biofilters need lots and lots of oxygen ... This might sound strange but it is true as I will explain. However before I do I would like to discuss oxygen in terms of good and effective pond keeping. You may know that trout and salmon can only breed in running water such as streams or rivers. You will also know that these particular fish make hazardous journeys up to the very top parts of river systems. The essential reason for these long perilous journeys to these headwaters are that the water is: cool, pristine, clear, fast running, shallow, full of gravel ... ie the oxygen levels are high and suitable for breeding. koi pond filters

  • If you are sick and tired of looking at debris on the bottom of your pond then consider buying an electrically operated vacuum cleaner. Just make sure that it is safe for pond use. OASE make the one that is best known. The latest version is Pondovac 2. For people who do not like to get their hand too mucky when cleaning out a pond there are specially made long length gloves extending right to the shoulder. If the water is a little too cold then the fishermen amongst you could easily use those waders to enter the water if cleaning has to be done. fountain pumps

  • Ponds & algae concerns ... At night, both algae and fish consume oxygen from and exhale carbon dioxide into the system. Algae compete with the fish for available oxygen in the water. A potentially serious impact of an algae bloom is the risk of an "algae crash" triggered by temperature or barometric pressure. When an algae bloom collapses, dead algae cells settle to the bottom of the pond, adding to the decomposing sediments oxygen demand. As the dead algae cells rupture, they release organic nitrogen and phosphorous back into the water, adding to the systems nutrient load. pond algae

  • Oygenators, pond plants ... All plants that live happily under water can be described as oxygenators. Out of these plants there are bound to be one or two that are the best for the job we need them to do. There is no doubt they are specialised. Roots tend to be merely for anchorage and the nutrition absorption and gaseous exchange occurs on the surface of the plant directly to each cell. The plant therefore has very thin walls and thin leaves to allow this to happen. This makes the plants floppy, which in fact becomes an advantage under water as they are able to bend with the eddies in the water. Two plants that have made this a real speciality and thrive in streams are Water Crowfoot, the true Water Buttercup (Ranunculus aquatalis) and Curly Pond Weed (Potamageton crispus). all about garden pond plants

  • Water has a maximum density at 4 degrees centigrade, about 39 degrees Fahrenheit so when a pond has a frozen surface the water at the bottom of the pond is normally at this temperature (higher density water sinks). Only in extremes of climate or in very shallow ponds therefore does a pond completely freeze solid. As the ice gets thicker form the top downwards then the water becomes even more insulated and will tend to stick at 4 degrees or 39 Fahrenheit. pond pump flow rates

  • Biofilters and bacteria starters ... Some manufacturers claim that their bio starters contain Nitrosomonas and Nitrobacter. Now it is extremely diffiult to freeze dry and keep alive such sensitive bacteria so any claim should be backed up by definitive proof of the fact that such powders do contain those bacteria and they are in a form that will work. If there was a viable population when packed then the question to be asked is are the bacteria still viable ater "x" weeks on a shelf in non-controlled conditions. If the concoction does not contain Nitrosomonas and Nitrobacter then what value is it anyway? biological pond filters

  • I received a very interesting question this week. The question was what is difference between a biofilter and the powder she throws into her pond every week as recommended by a dealer. The powder she was referring to is called a bio-starter or bacteria starter. These powder products are offered by many companies and are probably worthless in practice. The powder is supposed to be a mixture of naturally occurring bacteria that are also found in biofilters. The types of bacteria required for effective biofiltration convert ammonia to nitrites and then to nitrates. All fish ponds need a biofilter. This is non-negotiable. pond biofilters

  • Save when you buy koi food or fish food. Check your koi fish food label. Do NOT waste money. Understand the specification on koi food and fish food packets and you will save considerable amounts of money and grow bigger koi fish more quickly. Do not believe everything you are told about koi food it might not be true. Check for yourself easily. Koi Food If a 5 kg bag of koi food contains 15% ash, 10% moisture and 3% fibre then 28% of the bags contents (amounting to a whopping 1.4 kg) is a total waste of money. http://www.practical-water-gardens.com/koifood.htm pond pump selection

  • Winter water gardening ... Clear the surface. Light to the water surface is desirable in the winter months. You have probably already cut back the fleshy leafed early risers like the Marsh Marigolds (Caltha palustris), Bog Arums (Calla palustris) and the Water Forget-me-Not (Myosostis palustris), but leave the long grassy foliage to waft around in the breeze adding life to a seemingly lifeless scene. These reeds, rushes and grasses will double as cover for animals coming and going from the pool. Marsh Marigolds burst into yellow flower in early April again. waterlilies in ponds

 

Never switch off your pond pump for more than about 60 minutes

Make sure the delivery pipe from the pond pump is not kinked

Must the UV be placed before the biofilter?

A waterfall adds oxygen to a pond by creating a large surface area

Submersible pond pumps can operate against a closed valve

It is a good idea to pump out about 10% of your pond water

Lighting in and around ponds creates a brand new dimension

Sick and tired of looking at debris on the bottom of your pond?

Do not feed more food than what you fish can eat

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